Air purifier



1. Air purifier

1.1 : Front

1.2 : Back

1.3 : Left

1.4 : Top

1.5 : Bottom

1.6 : Perspective

1.7 : Perspective

1.1 is a front elevation view of an air purifier; 1.2 is a back elevation view thereof; 1.3 is a left side elevation view of the air purifier, and the left side elevation view is symmetrical to the right side elevation view of the air purifier; 1.4 is a top plan view thereof; 1.5 is a bottom plan view thereof; 1.6 is a perspective view thereof; and 1.7 is another perspective view thereof; the air purifier incorporating the new design is used for purifying the air; the drawing designated to best show the essential features of the design is 1.6.

The portions of the air purifier shown by coloring in Figure 1.5 form no part of the claimed design. 

CLAIM The ornamental design for an air purifier, as shown and described. 